Integrated control system for box-type substation

Abstract

The invention discloses a comprehensive control system for a box-type substation, and relates to the technical field of substation control, and the system comprises a monitoring module which is used for obtaining the first state information of a target box-type substation when the target box-type substation has no fault according to the three-dimensional model data, temperature data, gas data and a control instruction of the target box-type substation, second state information when a fault exists; and the control module is used for acquiring a fault prediction result according to the three-dimensional model data, the current temperature data and the gas data. Fault prediction is performed on the box-type substation according to the gas data, and a fault prediction result is obtained, so that accurate early warning can be performed at the initial fault stage of the box-type substation, early warning and active processing are performed on the fault of the box-type substation at the initial fault stage, and the fault is eliminated before a permanent fault occurs; and the probability of power failure accidents caused by equipment faults is reduced, so that the power supply quality and the service quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substation control, in particular to an integrated control system for a box-type transformer substation. Background Art

[0002] Box-type substation (abbreviated as box-type substation) is a kind of high-voltage switchgear, transformer and low-voltage power distribution device, which are prefabricated indoor and outdoor compact power distribution equipment arranged in one according to a certain wiring scheme. It organically combines the functions of high-voltage power receiving, transformer step-down, low-voltage power distribution, etc., and is installed in a fully enclosed and movable steel structure box. The box is moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulated, mechatronic, and fully enclosed. It includes communication module, lighting module, LED liquid crystal display module, opening and closing protection module, switch and cooling fan.

[0003] The operating status of the box-type substation directly affects the safety and stability of the power system. During the operation of the box-type substation, due to various reasons, overheating, discharge, short circuit and other faults may occur, resulting in the decomposition of oil and insulating materials, and the generation of gases of different types and contents. These gases dissolve in the transformer oil to form dissolved gas in oil (DGA), including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, total hydrocarbons, etc.

[0004] At present, the Chinese invention with application number 202410569568.9 discloses a box-type substation and its control method. According to real-time data from multiple sources and multi-layer control logic criteria, automatic sequential control power supply and sequential control power outage are realized, which solves the problems of difficult safe operation and high management cost of existing box-type substations. However, the fault can only be handled after the box-type substation fails, that is, emergency repair afterwards. It is difficult to warn and actively handle the fault of the box-type substation in the early stage of the fault, thereby reducing the probability of power outages caused by equipment failure. Summary of the invention

[0005] The technical problem solved by the present invention is that in the related art, fault handling can only be performed after a box-type substation fault occurs, and it is difficult to warn and actively handle the box-type substation fault in the early stage of the fault, thereby reducing the probability of power outages caused by equipment failures.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an integrated control system for a box-type substation, comprising a monitoring module, for obtaining first state information of a target box-type substation when there is no fault, and second state information when there is a fault, based on three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; a control module, for obtaining a fault prediction result based on the three-dimensional model data and current temperature data and gas data, constructing a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information, respectively, and obtaining control instruction information based on the first corresponding relationship and the second corresponding relationship.

[0007] As a preferred solution of the integrated control system for box-type substations described in the present invention, wherein: the first state information includes first temperature data, first gas data and first control instructions when the target box-type substation is fault-free; The second status information includes second temperature data, second gas data and second control instructions when the target box-type substation fails.

[0008] As a preferred solution of the integrated control system for box-type substations described in the present invention, wherein: the control module includes a temperature acquisition unit, a gas acquisition unit, a prediction unit and a control unit; The temperature acquisition unit is used to continuously collect temperature field data of the target box-type substation, calibrate actual detection points inside and outside the target box-type substation, and record the positions of the actual detection points, calibrate temperature points corresponding to the positions of the actual detection points on the three-dimensional model data, set temperature sensors at the actual detection points, send detection instructions to each temperature sensor through the temperature sensor, use a synchronous signal transmitter, each temperature sensor receives the detection instruction, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time, correspond the various temperature signals to the temperature points, and use different color values ​​to represent different temperatures, so as to form the temperature field data of the target box-type substation; The gas collection unit is used to continuously collect the solubility data of the first gas in the target box-type substation to obtain the first gas solubility sequence; The prediction unit is used to obtain a first gas prediction sequence according to the first gas solubility sequence, and obtain a fault prediction result of the box-type substation according to the first gas prediction sequence; The control unit is used to construct a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first corresponding relationship and the second corresponding relationship.

[0009] As a preferred solution of the integrated control system for box-type substations described in the present invention, the prediction unit further includes: Determining whether a prediction error of the first gas prediction sequence exceeds a preset error threshold; If the prediction error exceeds the preset error threshold, predicting the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result; The step of predicting the operating state of the target box-type substation according to the first gas prediction sequence to obtain a fault prediction result of the target box-type substation includes: If the prediction error does not exceed the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas prediction sequence to obtain the fault prediction result.

[0010] As a preferred solution of the integrated control system for box-type substations described in the present invention, the prediction unit further includes: Continuously collecting solubility data of a second gas in the target box-type substation to obtain a second gas solubility sequence, wherein at least part of the second gas is generated later than the first gas; If the prediction error exceeds the preset error threshold, predicting the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result includes: If the prediction error exceeds the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result.

[0011] As a preferred solution of the integrated control system for box-type substations described in the present invention, the prediction unit further includes: if the prediction error does not exceed the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result.

[0012] As a preferred solution of the integrated control system for box-type substations described in the present invention, the prediction unit further includes: if the prediction error does not exceed the preset error threshold, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating state of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, determining whether the second gas solubility sequence deviates from the preset sequence by more than a preset range; If the second gas solubility sequence deviates from the preset sequence by more than a preset range, predicting the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result; If the second gas solubility sequence deviates from the preset sequence within a preset range, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, which includes no fault and fault.

[0013] As a preferred solution of the integrated control system for box-type substations described in the present invention, the first gas includes at least hydrogen, methane, carbon monoxide and carbon dioxide; the second gas includes at least ethane, ethylene and acetylene.

[0014] As a preferred solution of the integrated control system for box-type substations described in the present invention, the control instruction information includes cooling fan control instructions, wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions; The control unit preliminarily matches the temperature field data with the cooling fan control instructions one by one, establishes a temperature instruction set, obtains the corresponding cooling fan control instructions from the temperature instruction set according to the temperature field data collected in real time, and sends them to the cooling fan.

[0015] As a preferred solution of the integrated control system for box-type substations described in the present invention, wherein: the first state information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions when the target box-type substation is fault-free; The second status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation has a fault; According to the fault prediction result and the first corresponding relationship and the second corresponding relationship respectively, the corresponding wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions are obtained and sent to the corresponding communication module, lighting module, LED liquid crystal display module, opening and closing protection module and switch.

[0016] The beneficial effects of the present invention are as follows: by predicting faults of box-type substations based on gas data and obtaining fault prediction results, accurate early warning can be achieved at the early stage of faults in box-type substations, thereby early warning and proactively handling faults in box-type substations at the early stage of faults, eliminating permanent faults before they occur, and reducing the probability of power outages due to equipment failures, thereby improving the quality of power supply and service. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an integrated control system for a box-type substation provided by one embodiment of the present invention; Figure 2 Another structural schematic diagram of an integrated control system for a box-type substation provided by one embodiment of the present invention; Figure 3 A schematic diagram of a flow chart of a fault prediction method executed by an integrated control system for a box-type substation provided by an embodiment of the present invention; Figure 4 A schematic flow chart of a fault prediction method executed by an integrated control system for a box-type substation provided in another embodiment of the present invention; Figure 5 A schematic flow chart of a fault prediction method executed by an integrated control system of a box-type substation provided in accordance with yet another embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0019] like Figure 1 As shown, the integrated control system 1 for a box-type substation includes a monitoring module 10 and a control module 20 , wherein, preferably, the control module 20 includes a temperature collection unit 21 , a gas collection unit 22 , a prediction unit 23 and a control unit 24 .

[0020] For detailed description of the functions of each module in the integrated control system 1 for box-type substations, please refer to Figure 2 , Figure 2 Another structural schematic diagram of an integrated control system for a box-type substation provided by an embodiment of the present invention, wherein the integrated control system 1 for a box-type substation includes a monitoring module 10, which is used to obtain first state information of a target box-type substation when there is no fault, and second state information when there is a fault, according to three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; The control module 20 is used to obtain fault prediction results based on the three-dimensional model data, current temperature data and gas data, construct a first corresponding relationship and a second corresponding relationship between the fault prediction results and the first state information and the second state information respectively, and obtain control instruction information based on the first corresponding relationship and the second corresponding relationship.

[0021] Acquire the 3D model data of the box-type substation in advance by image scanning or modeling in 3D model software, calibrate the temperature points on the 3D model data, acquire the temperature data of the target box-type substation, and perform heat dissipation inside the target box-type substation through the change of temperature data to prevent insulation softening and fire and other faults caused by overheating. Control the internal temperature of the box-type substation within the normal range. If the internal temperature of the box-type substation is overheated, there will be a heating process. As long as the internal temperature of the box-type substation is cooled and cooled during the heating process, it can prevent insulation softening and fire and other faults caused by excessively high temperature.

[0022] The box-type substation is a device in the power system, in which the transformer is usually used to adjust the voltage and current. The transformer is the core component of the box-type substation and is also a component that is prone to failure. The working status of the transformer can largely reflect the box-type substation. The gas solubility of the transformer is related to the operating status of the box-type substation. Changes in solubility data may reflect certain changes inside the box-type substation, such as temperature increase or material aging. Therefore, continuous monitoring of gas solubility may help prevent failures or assess equipment health.

[0023] By predicting faults of box-type substations based on gas data and obtaining fault prediction results, accurate early warning can be achieved in the early stages of box-type substation faults, thereby early warning and proactively handling box-type substation faults in the early stages of faults, eliminating them before permanent faults occur, reducing the probability of power outages due to equipment failures, and thus improving power supply quality and service quality.

[0024] The first state information includes first temperature data, first gas data and first control instruction when the target box-type substation has no fault; The second state information includes second temperature data, second gas data and second control instructions when the target box-type substation fails.

[0025] The sampling frequency of gas solubility data can be set according to actual needs to meet continuous monitoring requirements (such as sampling once per second or minute-level).

[0026] When the winding or core is locally overheated (such as poor contact, overload, cooling system failure, etc.), overheating faults are prone to occur in box-type substations. When the fault occurs, methane (CH4) and ethylene (C2H4) are dominant, and a small amount of ethane (C2H6) appears. If C2H4 / C2H6 > 3, it may be a serious overheating; when there are bubbles or cracks inside the insulating material, resulting in low-energy discharge, local discharge faults occur in box-type substations. When the fault occurs, high-energy electrons crack hydrocarbons or water to produce hydrogen (H2). The proportion of H2 in the box-type substation increases significantly (>100 ppm), and a small amount of methane (CH4) is produced along with H2; when the winding is short-circuited, the insulation is broken down or the contact is poor, causing high-energy discharge, arc discharge faults occur in box-type substations. The sudden increase in acetylene (C2H2) concentration (>10 ppm) can be used as a clear sign of arc discharge (high-temperature decomposition product), hydrogen will be generated along with arc discharge, and H2 / C2H2 < 0.1; When the insulating paper / epoxy resin ages, moisture intrudes or oxidatively decomposes, the insulating materials in the box-type substation age or become damp. At this time, carbon monoxide (CO) can be used as a sign of aging of solid insulating materials (such as paper, epoxy resin). Carbon dioxide (CO2) is also a product of oxidation or dampness of insulating materials. The CO / CO2 ratio in the box-type substation increases (>0.3), which may be accompanied by a small amount of H2.

[0027] Therefore, the first gas in the box-type substation may include methane, ethylene, ethane, acetylene, hydrogen, carbon monoxide, carbon dioxide and the like.

[0028] Preferably, if Figure 1 The control module 20 shown includes a temperature collection unit 21, a gas collection unit 22, a prediction unit 23 and a control unit 24; The temperature acquisition unit 21 is used to continuously collect the temperature field data of the target box-type substation, calibrate the actual detection points inside and outside the target box-type substation, and record the actual detection point positions, calibrate the temperature points corresponding to the actual detection point positions on the three-dimensional model data, set temperature sensors at the actual detection points, and send detection instructions to each temperature sensor through the temperature sensor using a synchronous signal transmitter. Each temperature sensor receives the detection instruction, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time. Each temperature signal corresponds to the temperature point, and different color values ​​are used to represent different temperatures to form the temperature field data of the target box-type substation; The gas collection unit 22 is used to continuously collect the solubility data of the first gas in the target box-type substation to obtain the first gas solubility sequence; The prediction unit 23 is used to obtain a first gas prediction sequence according to the first gas solubility sequence, and obtain a fault prediction result of the box-type substation according to the first gas prediction sequence; Among them, the solubility data of the first gas in the short term in the future can be predicted by using prediction models such as a grayscale prediction model and a linear regression prediction model to obtain a first gas prediction sequence.

[0029] The operating state of the box-type substation is predicted according to the first gas prediction sequence to obtain a fault prediction result of the box-type substation.

[0030] The control module 20 performs fault prediction on the box-type substation by executing the fault prediction method. Specifically, refer to Figure 3 , Figure 3 The fault prediction method provided in the first embodiment of the present application is shown in FIG. 1 , and the fault prediction method includes S110 to S130: S110, continuously collecting solubility data of a first gas in the box-type substation to obtain a first gas solubility sequence.

[0031] Box substations are equipment in power systems that are usually used to regulate voltage and current. The gas solubility in box substations is related to the operating status of the equipment. Changes in solubility data may reflect certain changes inside the equipment, such as temperature increase or material aging. Therefore, continuous monitoring of gas solubility may help prevent failures or assess equipment health.

[0032] The sampling frequency of gas solubility data can be set according to actual needs to meet continuous monitoring requirements (such as sampling once per second or minute-level).

[0033] When the winding or core is locally overheated (such as poor contact, overload, cooling system failure, etc.), overheating faults are prone to occur in box-type substations. When the fault occurs, methane (CH4) and ethylene (C2H4) are dominant, and a small amount of ethane (C2H6) appears. If C2H4 / C2H6 > 3, it may be a serious overheating; when there are bubbles or cracks inside the insulating material, resulting in low-energy discharge, local discharge faults occur in box-type substations. When the fault occurs, high-energy electrons crack hydrocarbons or water to produce hydrogen (H2). The proportion of H2 in the box-type substation increases significantly (>100 ppm), and a small amount of methane (CH4) is produced along with H2; when the winding is short-circuited, the insulation is broken down or the contact is poor, causing high-energy discharge, arc discharge faults occur in box-type substations. The sudden increase in acetylene (C2H2) concentration (>10 ppm) can be used as a clear sign of arc discharge (high-temperature decomposition product), hydrogen will be generated along with arc discharge, and H2 / C2H2 < 0.1; When the insulating paper / epoxy resin ages, moisture intrudes or oxidatively decomposes, the insulating materials in the box-type substation age or become damp. At this time, carbon monoxide (CO) can be used as a sign of aging of solid insulating materials (such as paper, epoxy resin). Carbon dioxide (CO2) is also a product of oxidation or dampness of insulating materials. The CO / CO2 ratio in the box-type substation increases (>0.3), which may be accompanied by a small amount of H2.

[0034] Therefore, the first gas in the box-type substation may include methane, ethylene, ethane, acetylene, hydrogen, carbon monoxide, carbon dioxide and the like.

[0035] S120, predicting the solubility data of the first gas according to the first gas solubility sequence to obtain a first gas prediction sequence.

[0036] Among them, the solubility data of the first gas in the short term in the future can be predicted by using prediction models such as a grayscale prediction model and a linear regression prediction model to obtain a first gas prediction sequence.

[0037] S130, predicting the operating state of the box-type substation according to the first gas prediction sequence to obtain a fault prediction result of the box-type substation.

[0038] Among them, fault prediction can be performed through a prediction model, for example, the LSTM model in the paper with the article number “1009-2552(2024)07-0076-08”.

[0039] After obtaining the fault prediction results, if it is predicted that the box-type substation is more likely to fail in the future, an alarm can be issued to prompt the staff to conduct fault troubleshooting and perform repairs in a timely manner.

[0040] In the present application, before predicting the operating status of the box-type substation, the solubility data of the first gas is predicted according to the first gas solubility sequence to obtain the first gas prediction sequence, and the operating status of the box-type substation is predicted according to the first gas prediction sequence. Compared with directly predicting the operating status of the box-type substation according to the first gas solubility sequence, the fault characteristics of the box-type substation can be amplified at the data level, so as to provide accurate early warning at the early stage of the failure of the box-type substation.

[0041] Please refer to Figure 4 , Figure 4 FIG. 2 shows a fault prediction method provided in the second embodiment of the present application, and the fault prediction method includes S210 to S250: S210, continuously collecting solubility data of a first gas in the box-type substation to obtain a first gas solubility sequence.

[0042] S220, predicting the solubility data of the first gas according to the first gas solubility sequence to obtain a first gas prediction sequence.

[0043] Among them, S210 can refer to the execution of S110 in the first embodiment, and S220 can refer to the execution of S120 in the first embodiment, which will not be repeated here.

[0044] S230, determining whether the prediction error of the first gas prediction sequence exceeds a preset error threshold; if the prediction error exceeds the preset error threshold, executing S240; if the prediction error does not exceed the preset error threshold, executing S250.

[0045] If the fault of the box-type substation develops slowly (such as local overheating), the gas generation rate is relatively stable, and the dissolved gas value series will show a steady upward trend; if the fault is sudden and severe (such as arc discharge), the gas generation rate will increase rapidly, and the dissolved gas value series will show a sharp rise.

[0046] Therefore, considering that the failure of the box-type substation may occur instantly and the data changes are more obvious, the prediction error of the first gas prediction sequence by the prediction model can be used to determine whether the fault characteristics are obvious enough to not need to be amplified.

[0047] If the prediction error of the first gas prediction sequence exceeds a certain range, there is no need to amplify the fault characteristics, and fault detection can be performed directly according to the original first gas solubility sequence, that is, S240 is executed. If the prediction error of the first gas prediction sequence does not exceed a certain range, it still means that the fault characteristics are not obviously presented, and it is necessary to perform fault detection according to the predicted first gas solubility sequence to amplify the fault characteristics in the original first gas solubility sequence.

[0048] Among them, the preset error threshold can be set according to actual needs. For example, it is determined whether the credibility of the prediction of the first gas prediction sequence exceeds 0.7. If the credibility exceeds 0.7, it can be considered that the prediction error does not exceed the preset error threshold. If the credibility is lower than 0.7, it can be considered that the prediction error exceeds the preset error threshold.

[0049] S240, predicting the operating state of the box-type substation according to the first gas solubility sequence to obtain a fault prediction result.

[0050] S250, predicting the operating state of the box-type substation according to the first gas prediction sequence to obtain a fault prediction result.

[0051] The present application determines whether the fault characteristics in the box-type substation are obvious enough by judging whether the prediction error of the first gas prediction sequence exceeds a preset error threshold. If the fault characteristics are obvious enough, the operating status of the box-type substation is predicted according to the original first gas solubility sequence to obtain a fault prediction result. If the fault characteristics are not obvious, the operating status of the box-type substation is predicted according to the predicted first gas prediction sequence to obtain a fault prediction result, thereby improving the accuracy of the prediction of the box-type substation.

[0052] Please refer to Figure 5 , Figure 5 FIG. 4 shows a fault prediction method provided in the third embodiment of the present application, and the fault prediction method includes S310 to S360: S310, continuously collecting solubility data of a first gas in the box-type substation to obtain a first gas solubility sequence.

[0053] Among them, S310 is executed with reference to S310 in the second embodiment, S330 can be executed with reference to S220 in the second embodiment, and S340 can be executed with reference to S230 in the second embodiment, which will not be described in detail here.

[0054] S320, continuously collecting solubility data of a second gas in the box-type substation to obtain a solubility sequence of the second gas, wherein at least part of the second gas is generated later than the first gas; When a box-type substation fails, dissolved gas analysis (DGA) is a common diagnostic method. By analyzing the gas components dissolved in the oil and their concentration changes, the type and severity of the fault inside the box-type substation can be determined. The following is the typical sequence of gas generation and the corresponding fault type when a box-type substation fails: Hydrogen is one of the earliest gases produced, usually produced during low-energy discharge or local overheating. It is an early product of the decomposition of insulating oil and is common in cases of local discharge or slight overheating. Methane is a product of the decomposition of insulating oil at lower temperatures (usually between 150°C and 300°C). It usually appears with hydrogen, indicating that there is slight overheating or partial discharge inside the box-type substation. The production temperature of ethane is slightly higher than that of methane, usually between 300°C and 500°C. Its appearance indicates that the degree of overheating inside the box-type substation has increased. The production temperature of ethylene is higher, usually Above 500°C, its appearance indicates that there is a serious thermal fault inside the box-type substation, such as winding overheating or local high temperature; acetylene is a typical product of high-temperature arc discharge, usually produced at around 1000°C. Its appearance usually indicates that there is a serious arc discharge fault inside the box-type substation, such as winding short circuit or serious local discharge; the production of carbon monoxide and carbon dioxide is usually related to the thermal decomposition of insulating materials, especially cellulose insulating materials. Their appearance may indicate that there is overheating or local discharge inside the box-type substation, leading to aging or decomposition of insulating materials.

[0055] During a box-type substation fault, the order of gas generation is usually: hydrogen (H2) → methane (CH4) → ethane (C2H6) → ethylene (C2H4) → acetylene (C2H2). At the same time, the generation of carbon monoxide (CO) and carbon dioxide (CO2) is related to the thermal decomposition of insulation materials and may appear in the early or middle stages of a fault.

[0056] Therefore, preferably, the first gas includes at least hydrogen and methane; the second gas includes at least ethane, ethylene and acetylene; further, taking all fault types into consideration, the first gas also includes carbon monoxide and carbon dioxide.

[0057] S330, predicting the solubility data of the first gas according to the first gas solubility sequence to obtain a first gas prediction sequence.

[0058] S340, determining whether the prediction error of the first gas prediction sequence exceeds a preset error threshold; if the prediction error exceeds the preset error threshold, executing S350; if the prediction error does not exceed the preset error threshold, executing S360.

[0059] S350, predicting the operating state of the box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain a fault prediction result.

[0060] S360, predicting the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and predicting the operating state of the box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain a fault prediction result.

[0061] Optionally, the second gas prediction sequence may be predicted by a neural network model in a Chinese patent with publication number "CN116204794A", or by multiple linear regression.

[0062] In the fault gas analysis of box-type substations, the generation of gases is often staged and dependent. According to the chemical reaction path of thermal decomposition of insulating materials, the first gas (such as hydrogen and methane) is usually generated at the beginning of the fault, while the second gas (such as ethane, ethylene, acetylene) is gradually generated as the fault energy or temperature rises. Its formation may depend on the accumulation or further cracking of the first gas. For example, ethane is generated by further cracking or recombination of methane.

[0063] If the fault occurs instantaneously, the first gas and the second gas are usually generated close to each other. Therefore, the solubility data of the second gas is predicted based on the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, which has higher accuracy than predicting the second gas prediction sequence based only on the second gas solubility sequence.

[0064] S360 further includes: S361, determine whether the second gas solubility sequence deviates from the preset sequence by more than a preset range; if the second gas solubility sequence deviates from the preset sequence by more than a preset range, execute S362; if the second gas solubility sequence deviates from the preset sequence by less than the preset range, execute S363.

[0065] Among them, the increase in the content of the second gas (such as ethane, ethylene, acetylene) may indicate the sudden occurrence of fault characteristics in the box-type substation. Therefore, the two conditions of the content of the second gas and whether the prediction error of the first gas prediction sequence exceeds the preset error threshold can be combined to determine whether the fault characteristics in the box-type substation are obvious enough to improve the accuracy of the judgment.

[0066] S362: predicting the operating state of the box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain a fault prediction result.

[0067] If the content of the second gas is high and the prediction error of the first gas prediction sequence does not exceed the preset error threshold, it means that a large amount of second gas has accumulated in the box-type substation. At this time, the fault characteristics are more obvious. The operating status of the box-type substation can be directly predicted according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result, so as to improve the accuracy of fault prediction and shorten the response time of fault warning.

[0068] S363, predicting the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and predicting the operating state of the box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain a fault prediction result.

[0069] If the content of the second gas is small and the prediction error of the first gas prediction sequence does not exceed the preset error threshold, it means that no fault has occurred in the box-type substation, or the fault is in the early stage. Therefore, the second gas solubility sequence can be predicted to amplify the fault characteristics in the second gas solubility sequence through the second gas prediction sequence, thereby achieving accurate early warning in the early stage of the fault.

[0070] Through the judgment of S340, it is possible to preliminarily judge whether the fault characteristics are obvious enough while ensuring the reliability of the first gas prediction sequence. Through the judgment of S361, it is possible to more accurately judge whether the fault characteristics are obvious enough. If the first gas prediction sequence is reliable, a quick and accurate warning can be given through S362 when the fault characteristics are obvious enough. When the fault characteristics are vague, the second gas solubility sequence is predicted through S363 to amplify the fault characteristics in the second gas solubility sequence through the second gas prediction sequence, thereby achieving accurate warning at the early stage of the fault.

[0071] The control command information includes cooling fan control command, wireless communication module control command, lighting module control command, LED liquid crystal display module control command, opening and closing protection module control command and switch status control command; The control unit 24 pre-matches the temperature field data with the cooling fan control instructions one by one, establishes a temperature instruction set, obtains the corresponding cooling fan control instructions from the temperature instruction set based on the temperature field data collected in real time, and sends them to the cooling fan. The cooling fan starts after receiving the cooling fan control instructions and adjusts to the corresponding wind speed to dissipate heat inside the box-type substation.

[0072] By collecting changes in temperature data and constructing real-time collected temperature field data, comparing the temperature of each temperature point on the real-time collected temperature field data with the temperature of the corresponding temperature point in the temperature field data, it is helpful to more accurately grasp and judge the changes in temperature data inside the box-type substation. During the heating process inside the box-type substation, the internal temperature of the box-type substation is dissipated and cooled, which can prevent insulation softening and fire caused by excessive temperature.

[0073] The first status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation is fault-free; The second status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation has a fault; According to the fault prediction result and the first corresponding relationship and the second corresponding relationship, the corresponding wireless communication module control instruction, lighting module control instruction, LED liquid crystal display module control instruction, opening and closing protection module control instruction and switch state control instruction are obtained and sent to the corresponding communication module, lighting module, LED liquid crystal display module, opening and closing protection module and switch. The communication module can send early warning information to inform the operation and maintenance personnel in time. By turning on the lighting module, it is convenient for the operation and maintenance personnel to observe the internal situation of the box-type substation. The LED liquid crystal display module is used to display the current parameter information of the box-type substation. By sending the opening and closing protection module control instruction, automatic opening and closing can be realized. When a short circuit fault occurs, the gate is opened in time to avoid causing a major fault. By controlling the switch to open, it is convenient to cut off the power supply when a fault occurs, thereby realizing automatic control of the box-type substation according to the first state information and the second state information of the box-type substation.

[0074] By predicting faults of box-type substations based on gas data and obtaining fault prediction results, accurate early warning can be achieved in the early stages of box-type substation faults, thereby early warning and proactively handling box-type substation faults in the early stages of faults, eliminating them before permanent faults occur, reducing the probability of power outages due to equipment failures, and thus improving power supply quality and service quality.

[0075] An embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in any embodiment of the above-mentioned box-type substation are implemented.

[0076] It should be understood by those skilled in the art that the embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. Among them, the storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An integrated control system for a box-type substation, characterized in that: include: A monitoring module, used to obtain first state information of the target box-type substation when there is no fault, and second state information of the target box-type substation when there is a fault, according to the three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; A control module is used to obtain a fault prediction result based on the three-dimensional model data, current temperature data and gas data, construct a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information based on the first corresponding relationship and the second corresponding relationship.

2. The integrated control system for a box-type substation according to claim 1, characterized in that: The first state information includes first temperature data, first gas data and first control instruction when the target box-type substation has no fault; The second status information includes second temperature data, second gas data and second control instructions when the target box-type substation fails.

3. The integrated control system for a box-type substation according to claim 2, characterized in that: The control module includes a temperature collection unit, a gas collection unit, a prediction unit and a control unit; The temperature acquisition unit is used to continuously collect temperature field data of the target box-type substation, calibrate actual detection points inside and outside the target box-type substation, and record the positions of the actual detection points, calibrate temperature points corresponding to the positions of the actual detection points on the three-dimensional model data, set temperature sensors at the actual detection points, send detection instructions to each temperature sensor through the temperature sensor, use a synchronous signal transmitter, each temperature sensor receives the detection instruction, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time, correspond the various temperature signals to the temperature points, and use different color values ​​to represent different temperatures, so as to form the temperature field data of the target box-type substation; The gas collection unit is used to continuously collect the solubility data of the first gas in the target box-type substation to obtain the first gas solubility sequence; The prediction unit is used to obtain a first gas prediction sequence according to the first gas solubility sequence, and obtain a fault prediction result of the box-type substation according to the first gas prediction sequence; The control unit is used to construct a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first corresponding relationship and the second corresponding relationship.

4. The integrated control system for a box-type substation according to claim 3, characterized in that: The prediction unit further includes: Determining whether a prediction error of the first gas prediction sequence exceeds a preset error threshold; If the prediction error exceeds the preset error threshold, predicting the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result; The step of predicting the operating state of the target box-type substation according to the first gas prediction sequence to obtain a fault prediction result of the target box-type substation includes: If the prediction error does not exceed the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas prediction sequence to obtain the fault prediction result.

5. The integrated control system for a box-type substation according to claim 4, characterized in that: The prediction unit further includes: Continuously collecting solubility data of a second gas in the target box-type substation to obtain a second gas solubility sequence, wherein at least part of the second gas is generated later than the first gas; If the prediction error exceeds the preset error threshold, predicting the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result includes: If the prediction error exceeds the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result.

6. The integrated control system for a box-type substation according to claim 5, characterized in that: The prediction unit further includes: if the prediction error does not exceed the preset error threshold, predicting the operating state of the target box-type substation according to the first gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result.

7. The integrated control system for a box-type substation according to claim 6, characterized in that: The prediction unit further includes: if the prediction error does not exceed the preset error threshold, predicting the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predicting the operating state of the target box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, determining whether the second gas solubility sequence deviates from the preset sequence by more than a preset range; If the second gas solubility sequence deviates from the preset sequence by more than a preset range, predicting the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result; If the second gas solubility sequence deviates from the preset sequence within a preset range, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, which includes no fault and fault.

8. The integrated control system for a box-type substation according to claim 7, characterized in that: The first gas includes at least hydrogen, methane, carbon monoxide and carbon dioxide; the second gas includes at least ethane, ethylene and acetylene.

9. The integrated control system for a box-type substation according to claim 8, characterized in that: The control instruction information includes cooling fan control instructions, wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions; The control unit preliminarily matches the temperature field data with the cooling fan control instructions one by one, establishes a temperature instruction set, obtains the corresponding cooling fan control instructions from the temperature instruction set according to the temperature field data collected in real time, and sends them to the cooling fan.

10. The integrated control system for a box-type substation according to claim 9, characterized in that: The first status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation is fault-free; The second status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation has a fault; According to the fault prediction result and the first corresponding relationship and the second corresponding relationship respectively, the corresponding wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions are obtained and sent to the corresponding communication module, lighting module, LED liquid crystal display module, opening and closing protection module and switch.

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